Age-group thresholds

IRONMAN 70.3 Ohio 2021 · 1,816 finishers

How to read it: in each row, the time under "Top 10%" is the time of the slowest athlete who still made the fastest 10% of the age group. Beat that time and you are in. Age groups with fewer than 5 finishers are omitted. Finishers only.

Men

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 1,225 4:17:28 4:43:09 4:58:04 5:20:56 6:09:31 3:59:29
M18-24 68 4:05:13 4:33:26 4:49:43 5:17:42 6:02:32 4:05:13
M25-29 125 4:11:25 4:34:52 4:52:51 5:19:45 6:12:04 4:07:07
M30-34 174 4:04:08 4:28:29 4:52:41 5:09:39 6:03:37 3:59:29
M35-39 168 4:14:51 4:27:40 4:47:46 5:02:10 5:54:45 4:05:46
M40-44 169 4:23:42 4:39:36 4:49:26 5:13:36 5:53:20 4:18:49
M45-49 155 4:17:08 4:44:35 5:04:39 5:25:33 6:02:37 4:14:08
M50-54 154 4:43:52 4:54:34 5:15:03 5:28:38 6:07:38 4:41:14
M55-59 113 4:55:44 5:09:41 5:20:54 5:54:05 6:35:39 4:39:44
M60-64 65 5:13:10 5:23:30 5:36:40 5:56:41 6:34:49 5:13:10
M65-69 29 5:08:47 5:14:07 5:23:09 5:47:56 6:40:31 5:08:47

Women

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 591 4:52:52 5:13:32 5:30:13 5:49:51 6:32:08 4:22:52
F18-24 23 5:28:46 5:29:07 5:43:37 5:50:13 6:28:07 5:28:46
F25-29 51 4:28:10 5:03:37 5:14:48 5:42:36 6:27:18 4:28:10
F30-34 72 4:58:04 5:08:01 5:21:11 5:53:52 6:22:37 4:58:04
F35-39 85 4:22:52 5:05:05 5:23:43 5:43:09 6:32:08 4:22:52
F40-44 114 5:10:55 5:15:41 5:27:01 5:46:26 6:31:17 5:00:49
F45-49 82 4:52:12 5:08:52 5:34:17 5:46:55 6:21:59 4:52:12
F50-54 93 4:54:51 5:19:34 5:39:51 6:00:19 6:35:33 4:54:51
F55-59 46 5:13:32 5:27:25 5:36:08 5:51:42 6:41:58 5:13:32
F60-64 18 5:33:42 5:33:42 5:40:26 6:04:47 6:50:30 5:33:42

Source: Seffrin A., Nikolaidis P.T., Andrade M.S., Villiger E., Rosemann T., Weiss K., Ferreira D., Knechtle B. (2026). A dataset of 2.7 million IRONMAN triathlon records with transition times (2002-2026), v3.0.0. Zenodo. CC BY 4.0. doi:10.5281/zenodo.22097794.